Car park after the green metal bridge on the way out of Sauvigny, heading towards Passy-sur-Marne.
(S/E) Continue down towards the Marne via Rue le Lohan and follow it to the left.
(1) Turn left, then right, running alongside the vineyards, and you’ll come out onto the D320.
(2) Turn right onto this departmental road and enter the village of Courcelles via Rue Pascal. Cross a road, then take Rue Voltaire on the right.
(3) Turn left onto Rue des Coutures and follow the route past the Courcelles water sports centre. Pass through fields and woods until you reach a road.
(4) Follow it to the left and enter Trélou-sur-Marne.
(5) Take Rue Victor Hugo on the right, passing a wash house and the town hall. Turn right to rejoin the Marne.
(6) Follow the GR® 15 Tour de l’Omois to the left, following the Marne for about 2 km, until you reach the D6.
(7) Turn right, cross the bridge and go round the roundabout at Place du Général de Gaulle.
(8) Continue slightly to the left along Rue Gambetta, then turn right into Rue du Château.
(9) Opposite the entrance to the castle grounds, turn right onto Avenue des Victoires until you reach a road. Turn right onto Rue du Chemin du Gault, then immediately left onto Rue de Thelusson, which leads onto the D41.
(10) Turn right onto Rue de Chavenay, then left onto Avenue de Paris. Follow this county road carefully for about 400 metres.
(11) Turn right onto Rue des Vieux Saules, cross the railway line and follow the River Marne on the left (picnic tables nearby and a sewage treatment works). Follow the River Marne for about 500 m.
(12) Leave the Marne by turning left towards the railway line and follow it until you rejoin the Marne.
(13) Turn left, passing the Voucy farm and the lock. Continue straight on until you reach the bridge.
(14) Cross the green metal bridge on the right to return to the car park (S/E).